JP2003174806A - Side marker for transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus with which operation of working posture and housing posture of a side marker is carried out by a marker actuator with a limit switch and in the case of abnormality of the limit switch, the operation of the side marker can smoothly be prevented. <P>SOLUTION: In a transplanter equipped with the side marker 2 at the side of a machine body, having a marker body 20 for drawing a line attached to the tip of a marker arm 2a, which can be changed from a line drawing posture to a housing posture, the side marker for the transplanter has constitution that the operation control of the operation posture and the housing posture of the side marker 2 is carried out by limit switches 7a and 7b for detecting the upper limit position and the lower limit position of the advance or retreat operation of the marker actuator 6 and the marker actuator 6 is equipped with a control member 7 for controlling the set operation range of the marker actuator 6 in the abnormality of the limit switches 7a and 7b, etc. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side marker device for a transplanter that projects laterally from a machine body and draws a traveling reference position for a next planting operation.

[0002]

2. Description of the Related Art A transplanting machine such as a riding rice transplanter for planting seedlings in a field along with traveling of an aircraft has a side marker for drawing a planting operation traveling reference line in the field, for example, Japanese Patent Laid-Open No. 2001-2001.
It is provided with a structure as disclosed in Japanese Patent No. 112307.

[0003]

In the side marker having the structure as disclosed in the above publication, the restriction member side of the marker arm is rotatably provided on the marker unit, and the piston portion of the marker cylinder (marker actuator) is moved back and forth. The wire-drawing work posture and the actuator are switched so that they can be rotated up and down, and the range of movement of the marker actuator is controlled by the limit switches on the upper and lower limits. There are problems that the side marker and the marker unit are damaged due to the operation of the marker actuator beyond the limit of the range, and that the proper working posture and storage posture are not maintained.

[0004]

A side marker of a transplanting machine according to the present invention has a side marker 2 having a marker body 20 for wire drawing provided at the tip of a marker arm 2a, which has a drawing work posture and a non-working storage posture. In the transplanter provided on the side of the machine body so as to be switchable to a limit switch 7a for detecting the upper limit position and the lower limit position of the forward / backward movement of the marker actuator 6, the operation control of the working posture and the storage posture of the side marker 2 is performed.
7b, and the marker actuator 6 is provided with a restricting member for restricting the set operation range of the marker actuator 6 when the limit switches 7a, 7b and the like are abnormal.

Further, it is characterized in that the operating range controlled by the restricting member 7 is set to be slightly larger than the set operating range of the marker actuator 6 set by the limit switches 7a, 7b.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a traveling machine body of a passenger rice transplanter exemplified as a transplanter, in which an engine section 1b covered with a bonnet is mounted on a front part of a machine body frame 1a having front wheels and rear wheels. A steering section 1c including a handle, a seat, etc. is arranged behind the plant, and a planting device 1 for multi-row planting is further provided in the rear through a hydraulic lifting link mechanism (not shown).
It is configured such that d can be moved up and down.

Further, fertilization tanks 1e are mounted on both sides of the engine section 1b, and an auxiliary seedling stand 1f is provided above them. A side marker 2 according to the present invention is provided on the machine body frame 1a inside the fertilizer tank 1e by the following configuration.

The side marker 2 has a marker arm 2a.
A rod-shaped marker body 20 for wire-drawing is integrally provided at the tip end of the through a rotation adjusting portion 3 so that the attachment angle can be adjusted.

The marker arm 2a is divided into a base side marker arm 2b and a front side marker arm 2c, both of which are switched between an extended position in which they are extended through the connecting part 4 and a folded position in which they are folded. The base arm of the base side marker arm 2b has a working posture in which the entire base of the marker arm 2a is extended to and supported by the body frame 1a via the marker unit 5 in a drawn state, and is rotated upward. It is configured so that it can be switched to a storage posture in which it is erected close to the inside of the body.

As shown in FIGS. 3 and 4, the marker unit 5 is mounted on a mounting bracket 50 which is detachably fixed to the machine body frame 1a, and is installed upright with a mounting rod 51 extending laterally. A unit machine frame 52 is integrally provided, and the lower end of the rotary plate 21 integrally fixed to the base of the base side marker arm 2b is attached to the tip of the mounting rod 51 at the fulcrum shaft 22.
It is rotatably supported by the unit machine frame 5
In FIG. 2, an intermediate portion of the cylinder portion 61 of the marker cylinder 6 that moves the piston portion 60 forward and backward by an electric double-action type is swingably and rotatably supported by a fulcrum pin 62 on the horizontal axis.

Then, the tip end of the piston portion 60 and the rotary plate 21 are interchangeably connected by a connecting pin 25 to a connecting hole 23 formed in an arcuate elongated hole centered on the fulcrum shaft 22. From the retracted posture shown by, the piston part 60
Can be extended (advanced) to change to a work posture as shown in FIG.

The connecting pin 25 moving in the connecting hole 23 of the rotating plate 21 is pulled and urged from the side of the unit machine frame 52 via the auxiliary spring 53. With this structure, the side marker 2 is stored in the storage posture. It is designed to promote the retreat of the piston portion 60 in the case of.

Since the side marker 2 (apparatus) is constructed as described above, when the tip of the wire-drawing marker body 20 at the tip of the marker arm 2a comes into contact with a stone or a hard soil block, the arc marker is formed into the arc shape. Since the marker arm 2a retreats upward through the fulcrum shaft 22 as a fulcrum through the formed connecting hole 23, it protects the side marker 2 from an excessive force and corresponds to the situation of the ground. The line can be drawn appropriately.

Particularly, in the marker unit 5 according to the present invention, the limit switches 7a and 7b and the operating member 7c are used.
Stops expansion and contraction of the piston 60 by contact with the piston 60
Restricting the expansion / contraction range "M" (Figs. 3, 4, 5) of the marker 2
The work posture and the storage posture of are set to proper positions.

Further, a restricting member 7 (a kind of stopper) shown in FIG. 5 is provided between the fulcrum pin 62 and the connecting pin 25, so that when the limit switches 7a and 7b have troubles such as failure. The marker cylinder 6 is prevented from extending and damage to the limit switches 7a and 7b and the marker unit 5 is prevented.

That is, as shown in FIG. 5, the regulating member 7 provided for preventing the abnormal extension of the piston portion 60 has a mounting hole 70 for loosely fitting the base portion side of the plate-like member to the fulcrum pin 62, as shown in FIG.
The connecting pin 25 is fitted to the tip end side, and the connecting pin 25 is freely slid when the marker cylinder 6 is operated, and from the operating range (set operating range) “M” set by the limit switches 7a and 7b. The restriction hole 71 is opened so that the restriction operation range (limit operation range) “N” is slightly longer.

With this structure, when the piston portion 60 moves forward and backward to rotate the side marker 2, both the marker cylinder 6 and the regulating member 7 freely swing around the fulcrum pin 62 as a fulcrum, and the operating range "M" is reached. It does not interfere with the operation of the connecting pin 25 inside the bracket.

Since the marker unit 5 is constructed as described above, in the "working posture" of the side marker 2, the actuating member 7c (FIGS. 3 and 4) is moved to the front limit switch 7.
a is contacted with a to support the wire drawing position in a stopped state, and in the "retracted posture" of the side marker 2, the operating member 7c is contacted with the rear limit switch 7b to support the standing position in a stopped state. It has become.

The expansion / contraction of the marker cylinder 6 is set with an expansion / contraction time so as to prevent damage due to overload. Then, damage due to overload is prevented by the regulation member 7, and the marker 2 is stopped at the approximately proper position by the regulation hole 71 so that the work can be continued.

Further, even if one of the limit switches 7a and 7b fails, the marker cylinder 6 is set so as to be stopped by the expansion and contraction operation for a predetermined time, so that the marker cylinder 6 is prevented from being overloaded. Further, the restriction hole 71 restricts the upper and lower limit positions of the side marker 2 at both ends thereof by abutting the connecting pin 25.

As described above, damage due to overload is prevented, and further, the marker 2 is stopped at the proper position by the restriction hole 71, whereby the work can be continued.

As described above, the side marker 2 is maintained in the working posture or the storing posture by the marker unit 5 provided with the regulating member 7. Even if a problem occurs in the system, each work can be continued without interruption and the planting work can be completed without any interruption.

The regulating member 7 includes a fulcrum pin 62 for connecting the marker cylinder 6 and the rotary plate 21 and a connecting pin 2.
5 (FIG. 3), it can be attached by fitting when assembling.

Therefore, there is a feature that the marker unit 5 provided with the regulating member 7 capable of performing the above-described action can be provided with a simple structure. Therefore, unlike the conventional device, the marker cylinder 6 is not provided with a complicated and expensive torque limiter mechanism or the like. Reference numeral 59 is a cover that covers the marker unit 5.

Next, the rotation adjusting portion 3 of the marker body 20 according to the present invention will be described with reference to FIGS.

The rotation adjusting portion 3 of the marker body 20 includes a box-frame-shaped mounting holder 30 rotatably fitted into the tip shaft portion of the front arm 2c, a mounting screw 31 of the mounting holder 30,
A rod-shaped marker body 20 (FIG. 8) having a predetermined length, which is attached in a drooping posture by 31, and the tip end side arm 2c is made to project so as to position the attachment holder 30 inward, and the tip end thereof is shown in FIG. The stopper shaft 32 is provided so as to be eccentrically separated from the front side arm 2c and bent outward in an L shape so as to hold the mounting holder 30 and extend outward.

Then, as shown in FIG.
There is provided a positioning member 9 which is rotatably fitted and pivotally supported by the stopper shaft 32 on the outer side of the above, and which adjusts the drawing posture of the marker body 20 by switching the mounting holder 30.

Further, the front side arm 2 is provided in the mounting holder 30.
A spring urging member 33, which is a winding spring or the like, is inserted into the stopper c, and both ends of the stopper shaft 32 and the mounting holder 30 are locked to urge the marker body 20 in the hanging wire drawing direction as shown in FIG. ing. Reference numeral 35 is a cotter pin which is provided on the front arm 2c so as to be engageable with and disengageable from the rotation adjusting portion.

Further, as shown in FIGS. 9 and 10, the positioning member 9 has a mounting hole 90 formed at the center of the plate-like piece for fitting and inserting into the stopper shaft 32, and slidably fitted into the tip side marker arm 2c. The guide hole 91 to be opened is opened in an arcuate hole extending from the attachment hole 90 to the drawing side and the storage side of the marker body 20 in a range of about 90 ° or more. Also,
On the other side of the mounting hole 90, an operation piece 92 for operating the drawing marker body 20 by rotating the positioning member 9 is extended.

As shown in FIG. 9, an L-shaped bent hook piece 93 is projectingly provided inside the positioning member 9, and a locking portion 95 formed at the tip of the hook piece 93 is formed in the guide hole 91 in a side view. It is installed at the end of the storage side.

The rotation adjusting section 3 configured as described above is in the state shown in FIGS. 8 and 11 in the working posture of the side marker 2 as shown in FIGS. When the front side arm 2c is positioned on the drawing posture side of the marker arm 2a indicated by the solid line, the marker body 20 rotatably supported by the tip side marker arm 2c from the hanging position to the retracted state is , The front edge side of the mounting holder 30 is locked to the stopper shaft 32, and the spring biasing member 33
The other end biases the mounting holder 30 downward in the spring direction.

Therefore, the locking portion 95 of the hook piece 93 provided on the positioning member 9 contacts the head portion of the mounting screw 31a below the mounting holder 30. Further, the mounting holder 30 is prevented from further rotating by the positioning member 9 having the stopper shaft 32 extending in the lateral direction of the front side marker arm 2c as a rotation fulcrum. As a result, the marker body 20
It is possible to stop and maintain the work posture in a solid line, and appropriately draw a line in the field scene as a reference for the planting work of the next process to the side along with the progress of the aircraft during the planting work. You can

At this time, for example, in a field having a hard surface and a large drawing resistance, or in a field in which a large amount of straw debris, weeds or the like 9999 are floating or scattered on the ground surface, the marker is used in the drawing posture as described above. Since the tip of the body 20 is deeply drawn in a state substantially orthogonal to the field scene, the drawing resistance is large, and the marker body 20 draws straw debris while forming an unclear line. In such a case, when the rotation adjusting section 3 is adjusted to switch the marker body 20 to the "retracted posture" in which the marker body 20 is rotated rearward with respect to the traveling direction as shown by the chain line in FIG.
Since the marker body 20 has a large receding angle and can draw at a shallow position like 20c, it is possible to perform drawing even in a hard field scene without great resistance. In addition, the straw debris can be satisfactorily drawn while allowing it to escape without being significantly dragged.

That is, in the rotation adjustment of the rotation adjusting portion 3 in this case, the attachment holder 30 and the marker body 20 are moved in the backward direction 20c of the marker body 20 with the operation piece 92 held at the position shown in FIG. When the mounting holder 30 is made to abut against the engaging portion 95 of the positioning member 9 on the side of the engaging portion 30a (FIG. 11) formed on the end portion of the mounting holder 30 while swinging, the mounting holder 30 becomes a spring. The rotation due to the urging is blocked through the locking portion 95, and the marker body 20 can be stopped in the retracted drawing posture shown by 20c as described above by a simple operation, and the state can be maintained.

In order to further raise the marker body 20 so that it does not come into contact with the field, the positioning member 9 is rotated counterclockwise as shown in FIG. 20 can be held in position (A). Further, as shown in FIG. 13, when the operating piece 92 is rotated counterclockwise to raise the hook piece 93, the hook piece 93 is brought into contact with the lower side of the front side edge portion of the attachment holder 30 to position the marker body 20 at the position (B ) Can be held in the storage position.

The marker body 20 has the marker arm 2c on the tip side as a fulcrum, and the positioning member 9 is supported by the stopper shaft 32 which is separated from the arm 2c. Even if the positioning member 9 is acted via the hook piece 93, the force is not applied.
Since it acts in the direction of pressing the stopper shaft 32, the marker body 20 can be held in its raised position without rotating the positioning member 9.

When the marker unit 5 is operated in the state shown in FIG. 13 to switch the marker arm 2a to the retracted posture, the marker body 20 extends along the machine side with the marker arm 2a standing up as shown in FIG. It will be supported compactly in the open state.

At this time, when the front side marker arm 2c is folded to the base side marker arm 2b side in the storage posture by the structure of the connecting portion 4 described below, as shown by the dotted line in FIG. Since the 20 can be supported at a lower position in a compact retracted posture along the airframe, it is possible to prevent obstacles such as contact when traveling on the road, and to easily carry out the airframe without requiring a large space. There are features such as being able to.

Next, the connecting portion 4 provided in the middle of the marker arm 2a will be described with reference to FIGS.

The connecting portion 4 is adapted to be inserted into and removed from the base side of the front side marker arm 2c in the tip portion of the base side marker arm 2b made of a pipe having a large diameter. In the state in which the adjustment screw 42 is inserted into the adjustment piece 40 fixed to the front side marker arm 2c, the adjustment hole 42 is formed in the long hole-shaped adjustment hole 41 formed to be substantially parallel to the base side marker arm 2b. The tip side marker arm 2c is supported in a straightened state with respect to the base side marker arm 2b by fastening the adjustment screw 42 to a mounting piece 43 protrudingly provided on the side of the base side marker arm 2b. .

With this configuration, the adjustment screw 42 is loosened to adjust and fix the attachment position of the base side marker arm 2b through the adjustment hole 41, so that the marker body 20 adjusts the horizontal drawing position. Can be done.

Then, the adjusting screw 42 is loosened, and the front side marker arm 2c is pulled out from the base side marker arm 2b, and the front side arm 2c is made L-shaped upward at the end of the adjusting hole 41 with the adjusting screw 42 as a fulcrum. When the marker arm 20 is inverted and the inverted marker arm 2c is fastened again with the adjusting screw 42, the side marker 2 can be easily put in the retracted posture of the marker body 20 as shown by the chain line in FIG. Can be switched to.

The traveling machine body 1 provided with the side markers 2 configured as described above is moved from the retracted posture shown in the front view of FIG. 3 to the marker unit 5 with the marker body 20 in the working posture.
When the marker cylinder 6 is extended (advanced), the planting work can be performed in an orderly manner with the appropriate line spacing between the planted seedlings and the line drawing by the side markers 2 as a reference.

When the planting work of the current planting article is completed and the machine is turned to the next planting article, the marker unit 5 is retracted and the side marker 2 is switched to the retracted posture. However, at this time, since the side marker 2 stands up with its base side as a fulcrum as shown in FIG. 1 and narrows the width of the machine, the aircraft can be smoothly turned, and then the side marker 2 on the other side is moved. It is possible to continuously perform the planting work while switching to the work posture and performing the drawing with the marker body 20 again.

[0046]

As described above, in the side marker of the transplanter of the present invention, the side marker 2 provided with the marker body 20 for drawing on the tip of the marker arm 2a is set to the side of the machine in the drawing work posture. In a transplanter that can be switched to a non-working storage posture, operation control of the working posture and the storage posture of the side marker 2 is performed by limit switches 7a and 7b that detect the forward and backward movement positions of the marker actuator 6, and the marker is used. It is characterized in that the actuator 6 is provided with a restricting member 7 for restricting the set operation range of the marker actuator 6 when the limit switches 7a, 7b and the like are abnormal.

Therefore, the marker actuator 6 can be operated in the set operating range "M" to properly switch the side marker 2 between the working posture and the retracted posture, and the limit switches 7a and 7b are regulated when they are abnormal. The member 7 restricts the limit operation (retraction movement) of the marker actuator 6, and the working position or the retracted position of the side marker 2 can be maintained at the restricted position.

The operating range "N" regulated by the regulating member 7
Is provided so as to be slightly larger than the set operating range “M” of the marker actuator 6 set by the limit switches 7a and 7b, the marker actuator 6 can be reliably stopped only when the limit switches 7a and 7b are abnormal. At the same time, it is possible to restrict the large operation of the operating member 7c at the limit.

[Brief description of drawings]

FIG. 1 is a perspective view of a transplanter equipped with a side marker device.

FIG. 2 is a front view showing a work posture of a side marker.

FIG. 3 is a front view showing a configuration of a marker unit of a side marker.

FIG. 4 is a plan view of FIG.

FIG. 5 is a front view of a restriction member.

FIG. 6 is a plan view showing a configuration of a rotation adjusting portion of a side marker.

FIG. 7 is a front view of the rotation adjusting unit of FIG.

FIG. 8 is a side view of FIG. 7.

9A is a side view of a positioning member, and FIG. 9B is a plan sectional view of FIG. 9A.

FIG. 10 is an exploded perspective view of a rotation adjusting section.

FIG. 11 is a front view showing a standard posture of a side marker.

FIG. 12 is a front view showing an intermediate position rising posture of a side marker.

FIG. 13 is a front view showing a storage posture of a side marker.

[Explanation of symbols]

1 Traveling Machine (Transplanter) 2 Side Marker 2a Marker Arm 2b Base Side Arm 2c Front Side Arm 20 Marker Body 3 Rotation Adjusting Section 30 Mounting Holder 32 Stopper Shaft 33 Spring Energizing Member (Spring) 4 Connection Section 5 Marker Unit 6 Marker cylinder (marker actuator) 7 Restricting members 7a, 7b Limit switch 9 Positioning member

Continued front page    F-term (reference) 2B043 AA01 AB03 BA02 BB06 CA03                       CB03 CB06 CB19 EB07 EB13                       EB24 EC02 EC12 EC19 ED14                       ED22                 2B062 AA03 AA05 AB01 BA34 CA05                       CA14 CB01

Claims (2)

[Claims] 1. A transplanter equipped with a side marker 2 provided with a marker body 20 for drawing on the tip of a marker arm 2a, which is provided on the side of the machine body so as to be switchable between a drawing work posture and a non-working storage posture. The operation control of the working posture and the storage posture of the side marker 2 is performed by the limit switches 7a and 7b that detect the advancing / retreating position of the marker actuator 6, and the marker actuator 6 is set when the limit switch 7a or 7b is abnormal in the marker actuator 6. A side marker for a transplanter, which is provided with a regulating member 7 that regulates an operation range. 2. The side marker of the transplanter according to claim 1, wherein the operating range regulated by the regulating member 7 is set to be slightly larger than the set operating range of the marker actuator 6 set by the limit switches 7a, 7b. .